Wiper Arm Fluid Connector Top-Side Access
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Solution Overview
Problem
Existing wiper arm designs with side-lock connections face challenges in easily integrating fluid connections, particularly at high driving speeds, where accessibility for cleaning fluid supply is compromised by the locking mechanism.
Innovation Solution
A wiper arm with a connection adapter that allows for top-side fluid connection via a fluid connector, which is parallel to the wiper arm's pin and can be easily plugged in after the wiper blade is installed, ensuring accessible fluid supply even when the wiper arm is locked.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a side-lock connection is used for the wiper blade, then the stability and cleaning performance at high speeds is improved, but the accessibility for fluid connection becomes difficult
Solution Approach 1:
The patent moves the fluid connection from the lateral dimension (where it would interfere with the side-lock mechanism) to the top dimension of the connection adapter. This dimensional shift allows the fluid connector to be accessed from above, independent of the lateral locking mechanism, thereby resolving the contradiction between stability and accessibility.
Solution Approach 2:
The connection adapter is designed as a separate component that segments the fluid connection function from the mechanical locking function. The adapter receives both the pin for lateral locking and the fluid connector on its top surface, allowing these two functions to operate independently without interfering with each other.
2Ease of manufacture
If the fluid connector is integrated into the connection adapter, then the installation simplicity is improved, but the accessibility during locked operation must be maintained
Solution Approach 1:
By positioning the fluid connector on the top surface of the connection adapter, the patent ensures that the fluid connection point remains accessible from above even when the wiper arm is in the locked position. This spatial arrangement maintains both installation simplicity and operational accessibility.
Solution Approach 2:
The connection adapter serves multiple functions: it provides the mechanical connection point for the wiper blade via the pin, and simultaneously provides the fluid connection point on its top surface. This multi-functionality integrates both mounting and fluid supply in a single component without compromising either function.
Data Source
Figure 1~2
AI summary
The invention relates to a wiper arm having a connection adapter on which a wiper blade (3), in particular a flat-bar wiper blade or jointless wiper blade, can be held and which has an opening (4) for laterally receiving a pin (5) of the wiper arm (1), wherein the connection adapter (2) can rotate around the pin (5) when the pin (5) is inserted, and which has locking means for securing the pin (5) in the opening (4), in particular a bridge which is arranged parallel to the pin (5) on the wiper arm (1) and extends over the connection adapter (2) with an angled end, wherein the connection adapter has fluid connections (10) for supplying a cleaning liquid, and at least one fluid connection (10) can be connected to the connection adapter (2) by means of a fluid plug (6) on the upper side of the connection adapter (2).